Home / 3,821.92-5,272.11-2,405.08

Finding the Fourth Proportional to 3,821.92, 5,272.11 and 2,405.08

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Solution

The fourth proportional to 3,821.92, 5,272.11 and 2,405.08 is: 3,317.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.92 : 5,272.11 = 2,405.08 : x
  2. Step 2: Convert to fraction form
    3,821.92/5,272.11 = 2,405.08/x
  3. Step 3: Cross multiply
    3,821.92x = 5,272.11 × 2,405.08
  4. Step 4: Simplify right side
    3,821.92x = 12,679,861.93
  5. Step 5: Solve for x
    x = 12,679,861.93/3,821.92
  6. Step 6: Final answer
    x = 3,317.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.